Thanks @QFBeth,
I don’t know if that helps. I think my query is based on the fact that for a purchase from abroad (now including the EU) the invoice would have no tax and we would select the reverse charge option to self-account for the VAT.
In this case, apparently EU tax has been paid according to the invoice, so reverse charge would appear not to be appropriate.
I guess, I’ll just treat it as £18.99 and set it to reverse charge. Although I won’ t be reclaiming the £3.17 tax, I can’t think of else that makes any sense.
By the way, the last link in the article Choosing the right VAT options for your overseas clients and suppliers (the one to to https://support.quickfile.co.uk/t/vat-updates-january-2021/39039/14) is broken - would this have explained more?